Ancient Space Dust Washes Up in Rooftop Gutters

Through dogged determination, Jon Larsen has become driven to find space particles, which date back to when our sun was a baby, in the urban sediment that collects in the guttering of building rooftops. In 2011, Larsen reached out to Matthew Genge, of Imperial College London, with his plan to find dust particles in this seemingly unlikely place. "It was an amateur scientist, a chap called Jon Larsen who's actually quite a well-known jazz musician in Norway, who got interested in this and started